澳门金沙城娱乐网站:Together again

时间：2019-03-07 09:14:00166网络整理admin

By Alison Motluk ABSENCE makes men’s hearts grow fonder, but apparently not women’s. Psychologists say this may be a strategy designed to help men outsmart an unfaithful partner. Males of most species can never be sure that the children they help to raise are their own. According to a 1995 study, men minimise the risk of unwittingly caring for another man’s child by producing more sperm in their ejaculate the longer they have been away from their partner. It made no difference how long it had been since the couple last had sex. Todd Shackelford at Florida Atlantic University in Davie and his colleagues suspected that a psychological mechanism might trigger the increase in sperm production. To find the link between psychology and physiology they asked 692 American and German men and women in committed heterosexual relationships to fill out an anonymous questionnaire. The respondents were asked when they last had sex with their partner and how many hours they had spent apart since. They also had to state how attractive they considered their partner, how attractive they thought their partner was to other people, and how eager they were to sleep with the partner again. The less time a couple had spent together since their last sexual encounter, the more attractive and desirable they rated their partner. “They aren’t aware of it,” says Shackelford. “They just think: `she looks hot’.” Again, the rating was independent of how long it had been since the couple last had sex. Women, on the other hand, rated their partners’ attractiveness the same regardless of time spent apart. Shackelford says the study suggests that human males have evolved ways of outsmarting an unfaithful partner just like males from other socially monogamous but not sexually exclusive species. More on these topics: